Ludwig otto helmers



and in Germany 5 dated June a, 18b3,) of which the following is i '4 5soluble in alcohol,

UNITED STATES.

v unwieorro m ns s, OF H -Manner, ERMANSZ, iss e'wo'n 'roicnrnvor.

GESELLSCHAFT,:(JORDEE'HERMANNI a co or SAME PLACE,

WATER-SOLUBLE. ooMPouND OF ETHEREAL OILS.

si ricrn cnmou forming part ofslletters Patent Mass 1,471, dated June15, 1897.

hg plication fi lcd pecen ilaari 1894. Serial llo. 580,910. I(Speciinensl Patented in Germany June 3, 1893, Nos. 76,133 and 80,260;ln finggland octo ber 2631893, No. 20,245; in BelgiumOotoher 26,1893,No. 106,919; in lrance October 26,1893, No. 2 :,6d2 in Italy December31, 18,93,110. 35,Q98,andinAustria-Hungary March 17,1895,No.56,910 andNo. 83,153.

To dll'uihomlit may concern Be it known that L'LUDWIG Or'ro HELMEli,

a subject oi? the German Emperon'residing at Hamburg, in theGermanEmpire, have in- ,5 vented a-certain new andfusefulProcess for()btaining'Aqueou's Solutions of Ethereal Oils, (for which I haveobtained Letters Patent in I Great Britain, dated October 26, 1893, No.20,2415; in Belgi um,dated October26,1893,No.

o 106,919; in Austria-Hungary, dated March R 1'7,.1895,No. 56,910andN'o. 83,1533 in ltaly, dated December 31, 1893, No. 35,098; inFrance, dated October 26, 1893, No. 233,662,

Nos. 76,133 and 80,250, both a specification.

In the specification of my Letters Patent of the United States No. 525,784, dated" Septeinbe'r 11,1894, I have described the purification no ofs'ul'fonized-carbon compounds obtained by the action of sulfuric acid orits substitutes on hydrocarbons and the separation of saidsulfonized-carbon compounds into sullfonie, acid salts per se soluble inwater and intosulzgfone-like bodies per se insoluble in Water.

Among the sulfonized-carbon compounds mentioned in the said LettersPatent are those of special importance'which are obtained'by treatingsulfureted hydrocarbons (containing I 30 at least five per centsulfur)with snlf uric acid or its substitutes and Which'are known under thename; of ichthyol and thio1.. As I have already stated in theabove-mentioned Letters Patent, these substances are com posi- 3 5 timeof diiferent bodies,and if they are treated according to the methoddescribed in the said Letters Iatenttwo bodies are obtained, one

bf which, called inthe said'Letters Patent I fsulfone-like body, isinsoluble in Water as s well as in alcohol,but soluble-in benzene. Theother, caller sulfonic-acid. compound, is not only soluble in Water, asthe ichthyol or thiol, but also-and this is the very difference betweenit and ichthyol and thiolcompl etely It is, however, nearly insoluble inether or benzene. Theinanufae ture of these two bodies from ichthyol andtheir respective properties I have fully described by an example in theabovcmentioned Letters Patent No. 525,784. 'Of these two bodies thesnlfonic-acid compound possesses an eminent importance by thecombinations which it-forms with certain bodies in; soluble in- Water.;As already stated inmy said Letters Patent No. 525,784, thesulfonelikebodyof ichthyol, though entirely insoluble in water, becomesreadilysoluble in water when combined with the sulfonic-acid compound'ofichthyol, and it is this complete solubility that makes the ichthyol sooften used as atherapeutic means.

Experimental attempts have now been made to clear up the'questionwhether other bodies insoluble in Water which are distinguished by theirtherapeutic properties could be com- '6 5 bined. with the sulfonic-acidcompound of. ichthyol or thiol in such a manner that a com-- binationcompletely soluble in Water is obtained;

Among othersubstauces I turned my mind to the ethereal oils, theirhomologues, and a1 lied substances, as'camphor, and I succeeded toobtain combinations completely soluble in Water consisting of anethereal oil and the suIfonic-acid compound of ichthyol and thiol. Thesecombinations are obtained by mixing or mixing and heating the etherealoil and the s'ulfonieacid compound with a small quantity of water or bydissolving the two bodies separately-in a suitable solvent, as alcohol,then mixing them and distilling off the solvent afterward. ;Gener'a1ly'lprcferUto' employ a sulfonic-acid compound vhich'still containsaboutone-third ofits weight in water and combineby mere'adrnixture, or byadmixture in presence of heat, about equalparts thereof andeucalyptus-oil, or three parts of the sul-. ionic-acid compound and onepart of peppermint-oil, or six parts of said sulfonic-a'cid compound andone part of turpentine-oil. The so-obtained combination is'a viscidbrown product, smelling f the ethereal oil. It is clearly soluble-i.Wetter in; all proportions withoutthe smallcst'separatioh of theethcreal oil. p Bythe introduction of a soluble ethcrealoil combinationan evident Want is satisfied, since in this" form the ethereal oil canbe distributed and applied everywhere and in every form. Medicalscience, for instance, is thereby enabled toprofit more widely by theinvigei'ating, antiseptic, and curative influence of the ethereal oils.

Having now fully described my invention, What I claim, and desire tosecure by Letters Patent, is-

1. The process of rendering soluble in water substances insolubletherein, such as ethereal oils and camphors by reacting-upon them with asulfonic-acid compound derived from a sulfureted hydrocarbon combinedwith sulfuric acid, said sulfonic-aoid compound being solu ble in Water,substantially as described.

2.' The process of rendering soluble in Water substances insolubletherein, such as'ethereal oils and ca1nphors,-b y reactin g-upon themwith} a compound soluble in Water consisting of sulfonic acid andsulfone-like constituents such as may be derived from ichthyoland thiol,substantially as described.

I The compound consisting of an ethereal oil'or a camphor, and a-SlllfOlllC -Qllfd compound derived from asulfurcteidhytd'iocarboncombined withsulfuric acid, said sulfonica'cid compound being-soluble inwater, substantially as set forth.

.4. The compound consisting of an ethereal oil on a camphorgand sulfonicacid and sulfone-like constituents of a sulfureted hydrocarbon combinedWith sulfuric acid such as may be derived fromiohthyol or thiol in suchproportions as to'render such oil or camphor soluble inwater,-substantially as set forth.

a In testimony that I claim the foregoing as my invention I have signedmy name, in presvember, 1891i.

ence of two Witnesses, this lith day of 'No-

